Tank gauge



FIG. 1 illustrates a front, top, and right side perspective view of a tank gauge.

FIG. 2 illustrates a front, bottom, and right side perspective view of the tank gauge.

FIG. 3 illustrates a right elevation view of the tank gauge.

FIG. 4 illustrates a front elevation view of the tank gauge.

FIG. 5 illustrates a top plan view of the tank gauge; and,

FIG. 6 illustrates a bottom plan view of the tank gauge.

The broken lines represent the environment in which the article resides and forms no part of the claimed design. 

CLAIM The ornamental design for a tank gauge, as shown and described. 